package 实验1;
public class Account {
	private double   balance;
	public Account(double   bal) {
		balance = bal;
		}
	public double getBalance() {
		return balance;
		}
	public boolean deposit(double amount) {
		balance = balance + amount;
		return true;
		}
public boolean withdraw(double amount) {
	boolean result = true;
	if ( balance < amount ) {
		result = false;
		} else {
			balance = balance -amount;
			}return result;
			}
}

